brick and mortar stores contend the tax loophole gives online stores a price advantage. the ceo of yahoo is defending her decision to end the tech company's work from home policy. the controversy sparked in february when a yahoo memo revealed marissa mayer was insisting yahoo employees would work better in the office than home. last week at a conference in los angeles, mayer told a crowd her comments were wrongly perceived as an "industry narrative." she also clarified: people are more productive when they are alone, but more innovative when they are together. the "silver state" is facing a rising unemployment rate. nevada now has the highest unemployment rate in the nation at 9.7%. nevada, california and mississippi had been tied at 9.6% in february. california and mississippi have now dropped to 9.4%. the country's lowest rate is in north dakota at 3.3%. the government is warning senior citizens to be cautious of investment scams. many seniors have their retirement savings parked in low-interest places such as treasury bonds, which are barely keeping up with the rate o